Catheter



FIG. 1 is a front view of a catheter;

FIG. 2 is a rear view thereof;

FIG. 3 is a left-side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is an enlarged view of the portion labeled 6 in FIG. 1;

FIG. 7 is an enlarged view of the portion labeled 7 in FIG. 4;

FIG. 8 is a cross-sectional view taken along the line labeled 8-8 in FIG. 6; and,

FIG. 9 is an enlarged view of the portion labeled 9 in FIG. 8.

The broken lines depict environmental subject matter only and form no part of the claimed design. The right-side view is not depicted because it contains environmental subject matter only. 

CLAIM The ornamental design for a catheter, as shown and described. 